reduction
chemistry
- Key People:
- Joseph Priestley
- On the Web:
- Khan Academy - Oxidation and reduction (Conventional definition) (July 17, 2025)
reduction, any of a class of chemical reactions in which the number of electrons associated with an atom or a group of atoms is increased. The electrons taken up by the substance reduced are supplied by another substance, which is thereby oxidized. See oxidation-reduction reaction.